"Accidents in the Chemical Industry: An Analysis of the Hfacs-Pefe Model to Examine the Role of Human Factors "

Abstract

One of the most common causes of accidents in chemical industry is human error. In order to minimize the accident frequency and associated damage, a better understanding of the role played by human factor in such accident is prerequisite. The Human Factors Analysis and Classification System- Petrochemical Enterprise Fire and Explosion (HFACS-PEFE) model is established to examine the mechanism of human failure. According to the model, violations, intellectual limitations, inadequate supervision, and insufficient safety culture are the most essential elements in the occurrence of accidents. Both direct causes and latent human failures involved in chemical industry accidents are identified and are then analyzed. An accident database is constructed which includes accident date, location, death and injuries. Relationships between different human factors, which are involved in the HFACS-PEFE framework, are identified by conducting chi-square test and odds ratio (OR) analysis. Different accident development paths and corresponding probabilities are achieved with the help of these relationships.

A novel framework for human factors analysis and classification system for medical errors (HFACS-MES)—A Delphi study and causality analysis

“…In this study the OR test is used to estimate whether the failure of the factors at an upper level of HFACS-MEs would increase the failure of factors at a lower level, which is the case if the OR is greater than 1. [36]. First, statistical tests were performed for all pairs of groups of human factors, and statistically significant relationships with ORs > 1 were subsequently kept for further analysis and drawing of the causality path diagram.…”

“…These results are in line with other causality analysis studies in the framework of HFACS. George et al [36], stated that "inadequate safety culture" at chemical industries can increase "failure to address a known problem" to 2.3 times. Chen [20], observed in the construction industry a statistically significant relationship between not paying attention to MOC and "inadequate planning".…”